问题 单项选择题

计算中心岛半径时,按路段设计车速的0.5倍作为环道的设计车速,依此计算出环道的圆曲线半径,中心岛半径就是该圆曲线半径减去环道宽度的( )。

A.1/2

B.1/3

C.1/4

D.1/5

答案

参考答案:A

解析:本题的考点是城市道路中心岛尺寸的确定。中心岛的半径首先应满足设计车速的需要,然后再按相交道路的条数和宽度,验证入口之间的距离是否符合车辆交织的要求。计算时按路段设计车速的0.5倍作为环道的设计车速,依此计算出环道的圆曲线半径,中心岛半径就是该圆曲线半径减去环道宽度的一半。

完形填空

完成句子(共10小题:每小题2分,满分20分)

小题1:With __________________________the competition, it is difficult for you to defend your championship. (participate)

这么多的学生参加比赛,你要保住冠军是很难得。

小题2:He found ____________________________________ getting up early. (adjust)

他发现很难适应早起。

小题3:________________ my teaching work all the time, I have no time for housework and social activities. (occupy)

由于忙于我的教学工作, 我没有时间做家务和社交活动。

小题4:People who approved of the reform urged that education resources ______________________ among the members of society equally. (distribute)

赞成这项改革的人们极力主张教育资源在社会成员间公平分配

小题5:The teacher criticized him, because it was the second time that___________________________. (make)

老师批评了他,因为这是他第二次犯同样的错误

小题6:Several failures ____________________ the truth that Rome was not built in a day. (aware)

几次失败已经让他意识到了“罗马不是一天建成的”这个道理。

小题7:Chemistry is not quite relevant to these students, ______________will be going back to their villages after year 8.(most)

化学与这些学生没有太大关联,他们中大多数人读完八年级后就会回到他们的村子。

小题8:_________________________________50 years ago now appears quite normal.(seem)

五十年前看似不可能的事情今天似乎很正常。

小题9:Not until one month later ________________________with the new class.(fit)

直到一个月以后他才融入这个新的班级。

小题10:Twenty nine passengers were reported ____________________ in the terrorist attacks in Yunnan Kunming Railway Station.(kill)

据说有二十九名乘客在昆明火车站的暴力恐怖袭击中丧生

多项选择题